| # SPDX-License-Identifier: GPL-2.0 |
| config FB_OLPC_DCON |
| tristate "One Laptop Per Child Display CONtroller support" |
| depends on OLPC && FB && BROKEN |
| depends on I2C |
| depends on GPIO_CS5535 && ACPI |
| select BACKLIGHT_CLASS_DEVICE |
| help |
| In order to support very low power operation, the XO laptop uses a |
| secondary Display CONtroller, or DCON. This secondary controller |
| is present in the video pipeline between the primary display |
| controller (integrate into the processor or chipset) and the LCD |
| panel. It allows the main processor/display controller to be |
| completely powered off while still retaining an image on the display. |
| This controller is only available on OLPC platforms. Unless you have |
| one of these platforms, you will want to say 'N'. |
| |
